Sandvik redesigns underground loader

  • 08-Jan-2009 12:33 EST

The LH514 LHD (lift, haul, dump) machine from Sandvik is fitted with a CAN bus electrical system that cuts the number of connections and also the number of potential problems.

Sandvik listened to customer requests during its Global Customer Roundtable to redesign and update the hydraulic and electrical systems of its Toro 9 underground loader. The result is the LH514, what it says is a much improved LHD (lift, haul, dump) piece of equipment.

The LH514 is powered by a Series 60 turbocharged Detroit Diesel, producing 243 kW (325 hp), connected to a Dana four-speed powershift transmission. Designed with the mining industry in mind, the transmission can be serviced and clutch packs replaced without removing it from the vehicle. Other large service hatches and swing-out doors also ease daily maintenance and major servicing, facilitated further by diagnostics from the electronic control system.

Equipment such as the LH514 work in difficult underground conditions that can often lead to electrical problems. To combat possible faults, Sandvik has replaced the 800 previous connections with a CAN bus system that contains 150 points of connection for fewer faults. The CAN bus setup also provides improved error prevention and detection. Combined with the diagnostic programs, operators can determine faulty components, often without leaving the cab.

Transporting ore is the primary task of the LH514, and it can tram up to 14,000 kg (30,865 lb). Hauling is a second part of the job description, and the tight articulated steering allows for a tight turning radius, necessary in cramped underground mines.

"Wings" on the side of the fuel tank were designed to deflect exhaust toward the back of the equipment rather than to the side, reducing the tendency to kick up dust.

The first production LH514 was sent to a copper and magnetite mine in South Africa, where after five months it had trammed 211,725 ton (192,073 t) of ore.
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